1 /* 2 * Copyright 2013 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Alex Deucher 23 */ 24 #include <linux/firmware.h> 25 #include <drm/drmP.h> 26 #include "radeon.h" 27 #include "radeon_ucode.h" 28 #include "radeon_asic.h" 29 #include "radeon_trace.h" 30 #include "cikd.h" 31 32 /* sdma */ 33 #define CIK_SDMA_UCODE_SIZE 1050 34 #define CIK_SDMA_UCODE_VERSION 64 35 36 u32 cik_gpu_check_soft_reset(struct radeon_device *rdev); 37 38 /* 39 * sDMA - System DMA 40 * Starting with CIK, the GPU has new asynchronous 41 * DMA engines. These engines are used for compute 42 * and gfx. There are two DMA engines (SDMA0, SDMA1) 43 * and each one supports 1 ring buffer used for gfx 44 * and 2 queues used for compute. 45 * 46 * The programming model is very similar to the CP 47 * (ring buffer, IBs, etc.), but sDMA has it's own 48 * packet format that is different from the PM4 format 49 * used by the CP. sDMA supports copying data, writing 50 * embedded data, solid fills, and a number of other 51 * things. It also has support for tiling/detiling of 52 * buffers. 53 */ 54 55 /** 56 * cik_sdma_get_rptr - get the current read pointer 57 * 58 * @rdev: radeon_device pointer 59 * @ring: radeon ring pointer 60 * 61 * Get the current rptr from the hardware (CIK+). 62 */ 63 uint32_t cik_sdma_get_rptr(struct radeon_device *rdev, 64 struct radeon_ring *ring) 65 { 66 u32 rptr, reg; 67 68 if (rdev->wb.enabled) { 69 rptr = rdev->wb.wb[ring->rptr_offs/4]; 70 } else { 71 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 72 reg = SDMA0_GFX_RB_RPTR + SDMA0_REGISTER_OFFSET; 73 else 74 reg = SDMA0_GFX_RB_RPTR + SDMA1_REGISTER_OFFSET; 75 76 rptr = RREG32(reg); 77 } 78 79 return (rptr & 0x3fffc) >> 2; 80 } 81 82 /** 83 * cik_sdma_get_wptr - get the current write pointer 84 * 85 * @rdev: radeon_device pointer 86 * @ring: radeon ring pointer 87 * 88 * Get the current wptr from the hardware (CIK+). 89 */ 90 uint32_t cik_sdma_get_wptr(struct radeon_device *rdev, 91 struct radeon_ring *ring) 92 { 93 u32 reg; 94 95 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 96 reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET; 97 else 98 reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET; 99 100 return (RREG32(reg) & 0x3fffc) >> 2; 101 } 102 103 /** 104 * cik_sdma_set_wptr - commit the write pointer 105 * 106 * @rdev: radeon_device pointer 107 * @ring: radeon ring pointer 108 * 109 * Write the wptr back to the hardware (CIK+). 110 */ 111 void cik_sdma_set_wptr(struct radeon_device *rdev, 112 struct radeon_ring *ring) 113 { 114 u32 reg; 115 116 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 117 reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET; 118 else 119 reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET; 120 121 WREG32(reg, (ring->wptr << 2) & 0x3fffc); 122 (void)RREG32(reg); 123 } 124 125 /** 126 * cik_sdma_ring_ib_execute - Schedule an IB on the DMA engine 127 * 128 * @rdev: radeon_device pointer 129 * @ib: IB object to schedule 130 * 131 * Schedule an IB in the DMA ring (CIK). 132 */ 133 void cik_sdma_ring_ib_execute(struct radeon_device *rdev, 134 struct radeon_ib *ib) 135 { 136 struct radeon_ring *ring = &rdev->ring[ib->ring]; 137 u32 extra_bits = (ib->vm ? ib->vm->ids[ib->ring].id : 0) & 0xf; 138 139 if (rdev->wb.enabled) { 140 u32 next_rptr = ring->wptr + 5; 141 while ((next_rptr & 7) != 4) 142 next_rptr++; 143 next_rptr += 4; 144 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0)); 145 radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc); 146 radeon_ring_write(ring, upper_32_bits(ring->next_rptr_gpu_addr)); 147 radeon_ring_write(ring, 1); /* number of DWs to follow */ 148 radeon_ring_write(ring, next_rptr); 149 } 150 151 /* IB packet must end on a 8 DW boundary */ 152 while ((ring->wptr & 7) != 4) 153 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0)); 154 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits)); 155 radeon_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */ 156 radeon_ring_write(ring, upper_32_bits(ib->gpu_addr)); 157 radeon_ring_write(ring, ib->length_dw); 158 159 } 160 161 /** 162 * cik_sdma_hdp_flush_ring_emit - emit an hdp flush on the DMA ring 163 * 164 * @rdev: radeon_device pointer 165 * @ridx: radeon ring index 166 * 167 * Emit an hdp flush packet on the requested DMA ring. 168 */ 169 static void cik_sdma_hdp_flush_ring_emit(struct radeon_device *rdev, 170 int ridx) 171 { 172 struct radeon_ring *ring = &rdev->ring[ridx]; 173 u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) | 174 SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */ 175 u32 ref_and_mask; 176 177 if (ridx == R600_RING_TYPE_DMA_INDEX) 178 ref_and_mask = SDMA0; 179 else 180 ref_and_mask = SDMA1; 181 182 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits)); 183 radeon_ring_write(ring, GPU_HDP_FLUSH_DONE); 184 radeon_ring_write(ring, GPU_HDP_FLUSH_REQ); 185 radeon_ring_write(ring, ref_and_mask); /* reference */ 186 radeon_ring_write(ring, ref_and_mask); /* mask */ 187 radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */ 188 } 189 190 /** 191 * cik_sdma_fence_ring_emit - emit a fence on the DMA ring 192 * 193 * @rdev: radeon_device pointer 194 * @fence: radeon fence object 195 * 196 * Add a DMA fence packet to the ring to write 197 * the fence seq number and DMA trap packet to generate 198 * an interrupt if needed (CIK). 199 */ 200 void cik_sdma_fence_ring_emit(struct radeon_device *rdev, 201 struct radeon_fence *fence) 202 { 203 struct radeon_ring *ring = &rdev->ring[fence->ring]; 204 u64 addr = rdev->fence_drv[fence->ring].gpu_addr; 205 206 /* write the fence */ 207 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0)); 208 radeon_ring_write(ring, lower_32_bits(addr)); 209 radeon_ring_write(ring, upper_32_bits(addr)); 210 radeon_ring_write(ring, fence->seq); 211 /* generate an interrupt */ 212 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0)); 213 /* flush HDP */ 214 cik_sdma_hdp_flush_ring_emit(rdev, fence->ring); 215 } 216 217 /** 218 * cik_sdma_semaphore_ring_emit - emit a semaphore on the dma ring 219 * 220 * @rdev: radeon_device pointer 221 * @ring: radeon_ring structure holding ring information 222 * @semaphore: radeon semaphore object 223 * @emit_wait: wait or signal semaphore 224 * 225 * Add a DMA semaphore packet to the ring wait on or signal 226 * other rings (CIK). 227 */ 228 bool cik_sdma_semaphore_ring_emit(struct radeon_device *rdev, 229 struct radeon_ring *ring, 230 struct radeon_semaphore *semaphore, 231 bool emit_wait) 232 { 233 u64 addr = semaphore->gpu_addr; 234 u32 extra_bits = emit_wait ? 0 : SDMA_SEMAPHORE_EXTRA_S; 235 236 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SEMAPHORE, 0, extra_bits)); 237 radeon_ring_write(ring, addr & 0xfffffff8); 238 radeon_ring_write(ring, upper_32_bits(addr)); 239 240 return true; 241 } 242 243 /** 244 * cik_sdma_gfx_stop - stop the gfx async dma engines 245 * 246 * @rdev: radeon_device pointer 247 * 248 * Stop the gfx async dma ring buffers (CIK). 249 */ 250 static void cik_sdma_gfx_stop(struct radeon_device *rdev) 251 { 252 u32 rb_cntl, reg_offset; 253 int i; 254 255 if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) || 256 (rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX)) 257 radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); 258 259 for (i = 0; i < 2; i++) { 260 if (i == 0) 261 reg_offset = SDMA0_REGISTER_OFFSET; 262 else 263 reg_offset = SDMA1_REGISTER_OFFSET; 264 rb_cntl = RREG32(SDMA0_GFX_RB_CNTL + reg_offset); 265 rb_cntl &= ~SDMA_RB_ENABLE; 266 WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl); 267 WREG32(SDMA0_GFX_IB_CNTL + reg_offset, 0); 268 } 269 rdev->ring[R600_RING_TYPE_DMA_INDEX].ready = false; 270 rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready = false; 271 } 272 273 /** 274 * cik_sdma_rlc_stop - stop the compute async dma engines 275 * 276 * @rdev: radeon_device pointer 277 * 278 * Stop the compute async dma queues (CIK). 279 */ 280 static void cik_sdma_rlc_stop(struct radeon_device *rdev) 281 { 282 /* XXX todo */ 283 } 284 285 /** 286 * cik_sdma_ctx_switch_enable - enable/disable sdma engine preemption 287 * 288 * @rdev: radeon_device pointer 289 * @enable: enable/disable preemption. 290 * 291 * Halt or unhalt the async dma engines (CIK). 292 */ 293 static void cik_sdma_ctx_switch_enable(struct radeon_device *rdev, bool enable) 294 { 295 uint32_t reg_offset, value; 296 int i; 297 298 for (i = 0; i < 2; i++) { 299 if (i == 0) 300 reg_offset = SDMA0_REGISTER_OFFSET; 301 else 302 reg_offset = SDMA1_REGISTER_OFFSET; 303 value = RREG32(SDMA0_CNTL + reg_offset); 304 if (enable) 305 value |= AUTO_CTXSW_ENABLE; 306 else 307 value &= ~AUTO_CTXSW_ENABLE; 308 WREG32(SDMA0_CNTL + reg_offset, value); 309 } 310 } 311 312 /** 313 * cik_sdma_enable - stop the async dma engines 314 * 315 * @rdev: radeon_device pointer 316 * @enable: enable/disable the DMA MEs. 317 * 318 * Halt or unhalt the async dma engines (CIK). 319 */ 320 void cik_sdma_enable(struct radeon_device *rdev, bool enable) 321 { 322 u32 me_cntl, reg_offset; 323 int i; 324 325 if (enable == false) { 326 cik_sdma_gfx_stop(rdev); 327 cik_sdma_rlc_stop(rdev); 328 } 329 330 for (i = 0; i < 2; i++) { 331 if (i == 0) 332 reg_offset = SDMA0_REGISTER_OFFSET; 333 else 334 reg_offset = SDMA1_REGISTER_OFFSET; 335 me_cntl = RREG32(SDMA0_ME_CNTL + reg_offset); 336 if (enable) 337 me_cntl &= ~SDMA_HALT; 338 else 339 me_cntl |= SDMA_HALT; 340 WREG32(SDMA0_ME_CNTL + reg_offset, me_cntl); 341 } 342 343 cik_sdma_ctx_switch_enable(rdev, enable); 344 } 345 346 /** 347 * cik_sdma_gfx_resume - setup and start the async dma engines 348 * 349 * @rdev: radeon_device pointer 350 * 351 * Set up the gfx DMA ring buffers and enable them (CIK). 352 * Returns 0 for success, error for failure. 353 */ 354 static int cik_sdma_gfx_resume(struct radeon_device *rdev) 355 { 356 struct radeon_ring *ring; 357 u32 rb_cntl, ib_cntl; 358 u32 rb_bufsz; 359 u32 reg_offset, wb_offset; 360 int i, r; 361 362 for (i = 0; i < 2; i++) { 363 if (i == 0) { 364 ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX]; 365 reg_offset = SDMA0_REGISTER_OFFSET; 366 wb_offset = R600_WB_DMA_RPTR_OFFSET; 367 } else { 368 ring = &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]; 369 reg_offset = SDMA1_REGISTER_OFFSET; 370 wb_offset = CAYMAN_WB_DMA1_RPTR_OFFSET; 371 } 372 373 WREG32(SDMA0_SEM_INCOMPLETE_TIMER_CNTL + reg_offset, 0); 374 WREG32(SDMA0_SEM_WAIT_FAIL_TIMER_CNTL + reg_offset, 0); 375 376 /* Set ring buffer size in dwords */ 377 rb_bufsz = order_base_2(ring->ring_size / 4); 378 rb_cntl = rb_bufsz << 1; 379 #ifdef __BIG_ENDIAN 380 rb_cntl |= SDMA_RB_SWAP_ENABLE | SDMA_RPTR_WRITEBACK_SWAP_ENABLE; 381 #endif 382 WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl); 383 384 /* Initialize the ring buffer's read and write pointers */ 385 WREG32(SDMA0_GFX_RB_RPTR + reg_offset, 0); 386 WREG32(SDMA0_GFX_RB_WPTR + reg_offset, 0); 387 388 /* set the wb address whether it's enabled or not */ 389 WREG32(SDMA0_GFX_RB_RPTR_ADDR_HI + reg_offset, 390 upper_32_bits(rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF); 391 WREG32(SDMA0_GFX_RB_RPTR_ADDR_LO + reg_offset, 392 ((rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC)); 393 394 if (rdev->wb.enabled) 395 rb_cntl |= SDMA_RPTR_WRITEBACK_ENABLE; 396 397 WREG32(SDMA0_GFX_RB_BASE + reg_offset, ring->gpu_addr >> 8); 398 WREG32(SDMA0_GFX_RB_BASE_HI + reg_offset, ring->gpu_addr >> 40); 399 400 ring->wptr = 0; 401 WREG32(SDMA0_GFX_RB_WPTR + reg_offset, ring->wptr << 2); 402 403 /* enable DMA RB */ 404 WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl | SDMA_RB_ENABLE); 405 406 ib_cntl = SDMA_IB_ENABLE; 407 #ifdef __BIG_ENDIAN 408 ib_cntl |= SDMA_IB_SWAP_ENABLE; 409 #endif 410 /* enable DMA IBs */ 411 WREG32(SDMA0_GFX_IB_CNTL + reg_offset, ib_cntl); 412 413 ring->ready = true; 414 415 r = radeon_ring_test(rdev, ring->idx, ring); 416 if (r) { 417 ring->ready = false; 418 return r; 419 } 420 } 421 422 if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) || 423 (rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX)) 424 radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size); 425 426 return 0; 427 } 428 429 /** 430 * cik_sdma_rlc_resume - setup and start the async dma engines 431 * 432 * @rdev: radeon_device pointer 433 * 434 * Set up the compute DMA queues and enable them (CIK). 435 * Returns 0 for success, error for failure. 436 */ 437 static int cik_sdma_rlc_resume(struct radeon_device *rdev) 438 { 439 /* XXX todo */ 440 return 0; 441 } 442 443 /** 444 * cik_sdma_load_microcode - load the sDMA ME ucode 445 * 446 * @rdev: radeon_device pointer 447 * 448 * Loads the sDMA0/1 ucode. 449 * Returns 0 for success, -EINVAL if the ucode is not available. 450 */ 451 static int cik_sdma_load_microcode(struct radeon_device *rdev) 452 { 453 int i; 454 455 if (!rdev->sdma_fw) 456 return -EINVAL; 457 458 /* halt the MEs */ 459 cik_sdma_enable(rdev, false); 460 461 if (rdev->new_fw) { 462 const struct sdma_firmware_header_v1_0 *hdr = 463 (const struct sdma_firmware_header_v1_0 *)rdev->sdma_fw->data; 464 const __le32 *fw_data; 465 u32 fw_size; 466 467 radeon_ucode_print_sdma_hdr(&hdr->header); 468 469 /* sdma0 */ 470 fw_data = (const __le32 *) 471 (rdev->sdma_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes)); 472 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4; 473 WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); 474 for (i = 0; i < fw_size; i++) 475 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, le32_to_cpup(fw_data++)); 476 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 477 478 /* sdma1 */ 479 fw_data = (const __le32 *) 480 (rdev->sdma_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes)); 481 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4; 482 WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); 483 for (i = 0; i < fw_size; i++) 484 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, le32_to_cpup(fw_data++)); 485 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 486 } else { 487 const __be32 *fw_data; 488 489 /* sdma0 */ 490 fw_data = (const __be32 *)rdev->sdma_fw->data; 491 WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); 492 for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++) 493 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, be32_to_cpup(fw_data++)); 494 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 495 496 /* sdma1 */ 497 fw_data = (const __be32 *)rdev->sdma_fw->data; 498 WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); 499 for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++) 500 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, be32_to_cpup(fw_data++)); 501 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 502 } 503 504 WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); 505 WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); 506 return 0; 507 } 508 509 /** 510 * cik_sdma_resume - setup and start the async dma engines 511 * 512 * @rdev: radeon_device pointer 513 * 514 * Set up the DMA engines and enable them (CIK). 515 * Returns 0 for success, error for failure. 516 */ 517 int cik_sdma_resume(struct radeon_device *rdev) 518 { 519 int r; 520 521 r = cik_sdma_load_microcode(rdev); 522 if (r) 523 return r; 524 525 /* unhalt the MEs */ 526 cik_sdma_enable(rdev, true); 527 528 /* start the gfx rings and rlc compute queues */ 529 r = cik_sdma_gfx_resume(rdev); 530 if (r) 531 return r; 532 r = cik_sdma_rlc_resume(rdev); 533 if (r) 534 return r; 535 536 return 0; 537 } 538 539 /** 540 * cik_sdma_fini - tear down the async dma engines 541 * 542 * @rdev: radeon_device pointer 543 * 544 * Stop the async dma engines and free the rings (CIK). 545 */ 546 void cik_sdma_fini(struct radeon_device *rdev) 547 { 548 /* halt the MEs */ 549 cik_sdma_enable(rdev, false); 550 radeon_ring_fini(rdev, &rdev->ring[R600_RING_TYPE_DMA_INDEX]); 551 radeon_ring_fini(rdev, &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]); 552 /* XXX - compute dma queue tear down */ 553 } 554 555 /** 556 * cik_copy_dma - copy pages using the DMA engine 557 * 558 * @rdev: radeon_device pointer 559 * @src_offset: src GPU address 560 * @dst_offset: dst GPU address 561 * @num_gpu_pages: number of GPU pages to xfer 562 * @resv: reservation object to sync to 563 * 564 * Copy GPU paging using the DMA engine (CIK). 565 * Used by the radeon ttm implementation to move pages if 566 * registered as the asic copy callback. 567 */ 568 struct radeon_fence *cik_copy_dma(struct radeon_device *rdev, 569 uint64_t src_offset, uint64_t dst_offset, 570 unsigned num_gpu_pages, 571 struct reservation_object *resv) 572 { 573 struct radeon_fence *fence; 574 struct radeon_sync sync; 575 int ring_index = rdev->asic->copy.dma_ring_index; 576 struct radeon_ring *ring = &rdev->ring[ring_index]; 577 u32 size_in_bytes, cur_size_in_bytes; 578 int i, num_loops; 579 int r = 0; 580 581 radeon_sync_create(&sync); 582 583 size_in_bytes = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT); 584 num_loops = DIV_ROUND_UP(size_in_bytes, 0x1fffff); 585 r = radeon_ring_lock(rdev, ring, num_loops * 7 + 14); 586 if (r) { 587 DRM_ERROR("radeon: moving bo (%d).\n", r); 588 radeon_sync_free(rdev, &sync, NULL); 589 return ERR_PTR(r); 590 } 591 592 radeon_sync_resv(rdev, &sync, resv, false); 593 radeon_sync_rings(rdev, &sync, ring->idx); 594 595 for (i = 0; i < num_loops; i++) { 596 cur_size_in_bytes = size_in_bytes; 597 if (cur_size_in_bytes > 0x1fffff) 598 cur_size_in_bytes = 0x1fffff; 599 size_in_bytes -= cur_size_in_bytes; 600 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0)); 601 radeon_ring_write(ring, cur_size_in_bytes); 602 radeon_ring_write(ring, 0); /* src/dst endian swap */ 603 radeon_ring_write(ring, lower_32_bits(src_offset)); 604 radeon_ring_write(ring, upper_32_bits(src_offset)); 605 radeon_ring_write(ring, lower_32_bits(dst_offset)); 606 radeon_ring_write(ring, upper_32_bits(dst_offset)); 607 src_offset += cur_size_in_bytes; 608 dst_offset += cur_size_in_bytes; 609 } 610 611 r = radeon_fence_emit(rdev, &fence, ring->idx); 612 if (r) { 613 radeon_ring_unlock_undo(rdev, ring); 614 radeon_sync_free(rdev, &sync, NULL); 615 return ERR_PTR(r); 616 } 617 618 radeon_ring_unlock_commit(rdev, ring, false); 619 radeon_sync_free(rdev, &sync, fence); 620 621 return fence; 622 } 623 624 /** 625 * cik_sdma_ring_test - simple async dma engine test 626 * 627 * @rdev: radeon_device pointer 628 * @ring: radeon_ring structure holding ring information 629 * 630 * Test the DMA engine by writing using it to write an 631 * value to memory. (CIK). 632 * Returns 0 for success, error for failure. 633 */ 634 int cik_sdma_ring_test(struct radeon_device *rdev, 635 struct radeon_ring *ring) 636 { 637 unsigned i; 638 int r; 639 unsigned index; 640 u32 tmp; 641 u64 gpu_addr; 642 643 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 644 index = R600_WB_DMA_RING_TEST_OFFSET; 645 else 646 index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; 647 648 gpu_addr = rdev->wb.gpu_addr + index; 649 650 tmp = 0xCAFEDEAD; 651 rdev->wb.wb[index/4] = cpu_to_le32(tmp); 652 653 r = radeon_ring_lock(rdev, ring, 5); 654 if (r) { 655 DRM_ERROR("radeon: dma failed to lock ring %d (%d).\n", ring->idx, r); 656 return r; 657 } 658 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0)); 659 radeon_ring_write(ring, lower_32_bits(gpu_addr)); 660 radeon_ring_write(ring, upper_32_bits(gpu_addr)); 661 radeon_ring_write(ring, 1); /* number of DWs to follow */ 662 radeon_ring_write(ring, 0xDEADBEEF); 663 radeon_ring_unlock_commit(rdev, ring, false); 664 665 for (i = 0; i < rdev->usec_timeout; i++) { 666 tmp = le32_to_cpu(rdev->wb.wb[index/4]); 667 if (tmp == 0xDEADBEEF) 668 break; 669 DRM_UDELAY(1); 670 } 671 672 if (i < rdev->usec_timeout) { 673 DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i); 674 } else { 675 DRM_ERROR("radeon: ring %d test failed (0x%08X)\n", 676 ring->idx, tmp); 677 r = -EINVAL; 678 } 679 return r; 680 } 681 682 /** 683 * cik_sdma_ib_test - test an IB on the DMA engine 684 * 685 * @rdev: radeon_device pointer 686 * @ring: radeon_ring structure holding ring information 687 * 688 * Test a simple IB in the DMA ring (CIK). 689 * Returns 0 on success, error on failure. 690 */ 691 int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) 692 { 693 struct radeon_ib ib; 694 unsigned i; 695 unsigned index; 696 int r; 697 u32 tmp = 0; 698 u64 gpu_addr; 699 700 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 701 index = R600_WB_DMA_RING_TEST_OFFSET; 702 else 703 index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; 704 705 gpu_addr = rdev->wb.gpu_addr + index; 706 707 tmp = 0xCAFEDEAD; 708 rdev->wb.wb[index/4] = cpu_to_le32(tmp); 709 710 r = radeon_ib_get(rdev, ring->idx, &ib, NULL, 256); 711 if (r) { 712 DRM_ERROR("radeon: failed to get ib (%d).\n", r); 713 return r; 714 } 715 716 ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0); 717 ib.ptr[1] = lower_32_bits(gpu_addr); 718 ib.ptr[2] = upper_32_bits(gpu_addr); 719 ib.ptr[3] = 1; 720 ib.ptr[4] = 0xDEADBEEF; 721 ib.length_dw = 5; 722 723 r = radeon_ib_schedule(rdev, &ib, NULL, false); 724 if (r) { 725 radeon_ib_free(rdev, &ib); 726 DRM_ERROR("radeon: failed to schedule ib (%d).\n", r); 727 return r; 728 } 729 r = radeon_fence_wait(ib.fence, false); 730 if (r) { 731 DRM_ERROR("radeon: fence wait failed (%d).\n", r); 732 return r; 733 } 734 for (i = 0; i < rdev->usec_timeout; i++) { 735 tmp = le32_to_cpu(rdev->wb.wb[index/4]); 736 if (tmp == 0xDEADBEEF) 737 break; 738 DRM_UDELAY(1); 739 } 740 if (i < rdev->usec_timeout) { 741 DRM_INFO("ib test on ring %d succeeded in %u usecs\n", ib.fence->ring, i); 742 } else { 743 DRM_ERROR("radeon: ib test failed (0x%08X)\n", tmp); 744 r = -EINVAL; 745 } 746 radeon_ib_free(rdev, &ib); 747 return r; 748 } 749 750 /** 751 * cik_sdma_is_lockup - Check if the DMA engine is locked up 752 * 753 * @rdev: radeon_device pointer 754 * @ring: radeon_ring structure holding ring information 755 * 756 * Check if the async DMA engine is locked up (CIK). 757 * Returns true if the engine appears to be locked up, false if not. 758 */ 759 bool cik_sdma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) 760 { 761 u32 reset_mask = cik_gpu_check_soft_reset(rdev); 762 u32 mask; 763 764 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 765 mask = RADEON_RESET_DMA; 766 else 767 mask = RADEON_RESET_DMA1; 768 769 if (!(reset_mask & mask)) { 770 radeon_ring_lockup_update(rdev, ring); 771 return false; 772 } 773 return radeon_ring_test_lockup(rdev, ring); 774 } 775 776 /** 777 * cik_sdma_vm_copy_pages - update PTEs by copying them from the GART 778 * 779 * @rdev: radeon_device pointer 780 * @ib: indirect buffer to fill with commands 781 * @pe: addr of the page entry 782 * @src: src addr to copy from 783 * @count: number of page entries to update 784 * 785 * Update PTEs by copying them from the GART using sDMA (CIK). 786 */ 787 void cik_sdma_vm_copy_pages(struct radeon_device *rdev, 788 struct radeon_ib *ib, 789 uint64_t pe, uint64_t src, 790 unsigned count) 791 { 792 while (count) { 793 unsigned bytes = count * 8; 794 if (bytes > 0x1FFFF8) 795 bytes = 0x1FFFF8; 796 797 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY, 798 SDMA_WRITE_SUB_OPCODE_LINEAR, 0); 799 ib->ptr[ib->length_dw++] = bytes; 800 ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */ 801 ib->ptr[ib->length_dw++] = lower_32_bits(src); 802 ib->ptr[ib->length_dw++] = upper_32_bits(src); 803 ib->ptr[ib->length_dw++] = lower_32_bits(pe); 804 ib->ptr[ib->length_dw++] = upper_32_bits(pe); 805 806 pe += bytes; 807 src += bytes; 808 count -= bytes / 8; 809 } 810 } 811 812 /** 813 * cik_sdma_vm_write_pages - update PTEs by writing them manually 814 * 815 * @rdev: radeon_device pointer 816 * @ib: indirect buffer to fill with commands 817 * @pe: addr of the page entry 818 * @addr: dst addr to write into pe 819 * @count: number of page entries to update 820 * @incr: increase next addr by incr bytes 821 * @flags: access flags 822 * 823 * Update PTEs by writing them manually using sDMA (CIK). 824 */ 825 void cik_sdma_vm_write_pages(struct radeon_device *rdev, 826 struct radeon_ib *ib, 827 uint64_t pe, 828 uint64_t addr, unsigned count, 829 uint32_t incr, uint32_t flags) 830 { 831 uint64_t value; 832 unsigned ndw; 833 834 while (count) { 835 ndw = count * 2; 836 if (ndw > 0xFFFFE) 837 ndw = 0xFFFFE; 838 839 /* for non-physically contiguous pages (system) */ 840 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_WRITE, 841 SDMA_WRITE_SUB_OPCODE_LINEAR, 0); 842 ib->ptr[ib->length_dw++] = pe; 843 ib->ptr[ib->length_dw++] = upper_32_bits(pe); 844 ib->ptr[ib->length_dw++] = ndw; 845 for (; ndw > 0; ndw -= 2, --count, pe += 8) { 846 if (flags & R600_PTE_SYSTEM) { 847 value = radeon_vm_map_gart(rdev, addr); 848 } else if (flags & R600_PTE_VALID) { 849 value = addr; 850 } else { 851 value = 0; 852 } 853 addr += incr; 854 value |= flags; 855 ib->ptr[ib->length_dw++] = value; 856 ib->ptr[ib->length_dw++] = upper_32_bits(value); 857 } 858 } 859 } 860 861 /** 862 * cik_sdma_vm_set_pages - update the page tables using sDMA 863 * 864 * @rdev: radeon_device pointer 865 * @ib: indirect buffer to fill with commands 866 * @pe: addr of the page entry 867 * @addr: dst addr to write into pe 868 * @count: number of page entries to update 869 * @incr: increase next addr by incr bytes 870 * @flags: access flags 871 * 872 * Update the page tables using sDMA (CIK). 873 */ 874 void cik_sdma_vm_set_pages(struct radeon_device *rdev, 875 struct radeon_ib *ib, 876 uint64_t pe, 877 uint64_t addr, unsigned count, 878 uint32_t incr, uint32_t flags) 879 { 880 uint64_t value; 881 unsigned ndw; 882 883 while (count) { 884 ndw = count; 885 if (ndw > 0x7FFFF) 886 ndw = 0x7FFFF; 887 888 if (flags & R600_PTE_VALID) 889 value = addr; 890 else 891 value = 0; 892 893 /* for physically contiguous pages (vram) */ 894 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_GENERATE_PTE_PDE, 0, 0); 895 ib->ptr[ib->length_dw++] = pe; /* dst addr */ 896 ib->ptr[ib->length_dw++] = upper_32_bits(pe); 897 ib->ptr[ib->length_dw++] = flags; /* mask */ 898 ib->ptr[ib->length_dw++] = 0; 899 ib->ptr[ib->length_dw++] = value; /* value */ 900 ib->ptr[ib->length_dw++] = upper_32_bits(value); 901 ib->ptr[ib->length_dw++] = incr; /* increment size */ 902 ib->ptr[ib->length_dw++] = 0; 903 ib->ptr[ib->length_dw++] = ndw; /* number of entries */ 904 905 pe += ndw * 8; 906 addr += ndw * incr; 907 count -= ndw; 908 } 909 } 910 911 /** 912 * cik_sdma_vm_pad_ib - pad the IB to the required number of dw 913 * 914 * @ib: indirect buffer to fill with padding 915 * 916 */ 917 void cik_sdma_vm_pad_ib(struct radeon_ib *ib) 918 { 919 while (ib->length_dw & 0x7) 920 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0); 921 } 922 923 /** 924 * cik_dma_vm_flush - cik vm flush using sDMA 925 * 926 * @rdev: radeon_device pointer 927 * 928 * Update the page table base and flush the VM TLB 929 * using sDMA (CIK). 930 */ 931 void cik_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring, 932 unsigned vm_id, uint64_t pd_addr) 933 { 934 u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) | 935 SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */ 936 937 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 938 if (vm_id < 8) { 939 radeon_ring_write(ring, (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2); 940 } else { 941 radeon_ring_write(ring, (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm_id - 8) << 2)) >> 2); 942 } 943 radeon_ring_write(ring, pd_addr >> 12); 944 945 /* update SH_MEM_* regs */ 946 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 947 radeon_ring_write(ring, SRBM_GFX_CNTL >> 2); 948 radeon_ring_write(ring, VMID(vm_id)); 949 950 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 951 radeon_ring_write(ring, SH_MEM_BASES >> 2); 952 radeon_ring_write(ring, 0); 953 954 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 955 radeon_ring_write(ring, SH_MEM_CONFIG >> 2); 956 radeon_ring_write(ring, 0); 957 958 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 959 radeon_ring_write(ring, SH_MEM_APE1_BASE >> 2); 960 radeon_ring_write(ring, 1); 961 962 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 963 radeon_ring_write(ring, SH_MEM_APE1_LIMIT >> 2); 964 radeon_ring_write(ring, 0); 965 966 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 967 radeon_ring_write(ring, SRBM_GFX_CNTL >> 2); 968 radeon_ring_write(ring, VMID(0)); 969 970 /* flush HDP */ 971 cik_sdma_hdp_flush_ring_emit(rdev, ring->idx); 972 973 /* flush TLB */ 974 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 975 radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2); 976 radeon_ring_write(ring, 1 << vm_id); 977 978 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits)); 979 radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2); 980 radeon_ring_write(ring, 0); 981 radeon_ring_write(ring, 0); /* reference */ 982 radeon_ring_write(ring, 0); /* mask */ 983 radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */ 984 } 985 986